function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
import { useEffect, useState, useRef } from 'react';
import debounce from 'lodash.debounce';
import { Spinner } from '@filerobot/common';
import { usePrevious } from '../../hooks';
import Styled from './InfiniteScroll.styled';
import { jsx as _jsx } from "react/jsx-runtime";
import { jsxs as _jsxs } from "react/jsx-runtime";
var actionTriggered = false;
var InfiniteScroll = function InfiniteScroll(_ref) {
  var children = _ref.children,
    dataLength = _ref.dataLength,
    next = _ref.next,
    hasMore = _ref.hasMore,
    scrollableTarget = _ref.scrollableTarget,
    targetedScrollElement = _ref.targetedScrollElement,
    onScroll = _ref.onScroll;
  var prevProps = usePrevious({
    dataLength: dataLength
  });
  var _useState = useState(false),
    _useState2 = _slicedToArray(_useState, 2),
    showLoader = _useState2[0],
    setShowLoader = _useState2[1];
  var internalScrollRef = useRef();
  var scrollableNodeRef = useRef(null);
  var isScrollAtBottom = function isScrollAtBottom(target, targetedScrollElement) {
    var clientHeight = target.clientHeight;
    var scrollElement = document.getElementById(targetedScrollElement);
    if (scrollElement) {
      var scrollHeight = scrollElement.scrollHeight;
      return target.scrollTop + clientHeight >= scrollHeight;
    }
    return target.scrollTop + clientHeight >= 0.8 * target.scrollHeight;
  };
  var onScrollListener = debounce(function (event) {
    if (onScroll) {
      onScroll(event);
    }
    if (actionTriggered) return;
    var atBottom = isScrollAtBottom(event.target, targetedScrollElement);
    if (atBottom && hasMore) {
      actionTriggered = true;
      setShowLoader(true);
      next();
    }
  }, 150);
  var getScrollableTarget = function getScrollableTarget() {
    if (scrollableTarget && typeof scrollableTarget === 'string') {
      return document.getElementById(scrollableTarget);
    }
    return internalScrollRef.current;
  };
  useEffect(function () {
    if (next) {
      scrollableNodeRef.current = getScrollableTarget();
      var scrollableNode = scrollableNodeRef.current;
      if (scrollableNode) {
        scrollableNode.addEventListener('scroll', onScrollListener);
      }
      return function () {
        if (scrollableNode) {
          scrollableNode.removeEventListener('scroll', onScrollListener);
        }
      };
    }
  }, [hasMore]);
  useEffect(function () {
    if ((prevProps === null || prevProps === void 0 ? void 0 : prevProps.dataLength) === dataLength) {
      return;
    }
    actionTriggered = false;
    setShowLoader(false);
  }, [dataLength]);
  return /*#__PURE__*/_jsxs(Styled.Container, {
    ref: internalScrollRef,
    children: [children, showLoader && hasMore && /*#__PURE__*/_jsx(Spinner, {
      fillContainer: true
    })]
  });
};
export default InfiniteScroll;